Do you need a special dispenser for this foam? Or will a standard caulking gun work?

You need a special dispenser. A standard caulking gun won't work.

Can this be used in a standard caulking gun?

No, it needs a special dispensing gun

Is this heat resistance .want to put in my corvette rocker panels .to fill in the gaps

Yes it has a fire rating which you can find on the tube or on the SDS but I think it is 2 hours.

What is the flame spread rating and smoke development rating?

Flame spread 2 hours. Class 1 smoke spread. I can tell you from being in the fire protection business. That this is acceptable anywhere in the United States. Per fire marshal and life safety inspectors. Basically anything that meets California fire protection laws meets all US needs. FIP 1-Step shall be a two-component, ready-to-use, gun-grade, firestopping foam. FIP 1-Step shall be tested to the criteria of ASTM E 814/UL 1479 Standard Test Method for Fire Tests of Penetration Firestop Systems, ASTM E 84/UL 723 Standard Test Method for Surface Burning Characteristics of Building Materials, ASTM E 90 Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements, and ASTM E 413 Classification for Rating Sound Insulation. FIP 1-Step shall meet the requirements of the IBC, IRC, IFC, IPC, IMC, NFPA 5000, NEC (NFPA 70), NFPA 101 and NBCC.

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🔥 Seal the deal with 3M’s fireproof foam—where safety meets smart innovation!

PAINT READY FINISH - Seamlessly integrates with your design—paintable with primer for a flawless look.
SUPERIOR SOUNDPROOFING - Achieves an STC rating of 57, blocking noise to create a quieter, more focused environment.
MASSIVE EXPANSION POWER - Expands up to 5 times its volume, filling gaps efficiently without extra materials.
UNMATCHED FIRE PROTECTION - Tested to withstand fire for up to 2 hours, ensuring your space stays safe and compliant.
RE ENTER REPAIR WITH EASE - Specially formulated foam stays pliable post-installation for hassle-free adjustments.

3M Fire Barrier Rated Foam FIP 1-Step is a high-performance, maroon polyurethane foam cartridge designed for industrial firestopping. It offers up to 2 hours of fire resistance (ASTM E814), an STC 57 soundproof rating, and expands 5 times in volume for efficient sealing. The foam is re-enterable, repairable, waterproof, and paint-ready, eliminating the need for backing materials in walls or floors.

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Very impressed with the quality and fast delivery. Will shop here again.

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Colour	Maroon
Brand	3M
Item Weight	11.2 Ounces
Liquid Volume	12.85 Fluid Ounces
Item Form	Foam
Surface Recommendation	floor, wall
Tensile Strength	1E+2 PSI
Water Resistance Level	Waterproof
Number of Items	1
Manufacturer	3M
UPC	051115549250
Global Trade Identification Number	00051115549250
Net Quantity	1 Count
Material	Polyurethane
Model number	98040056453
Item Weight	317 g
Product Dimensions	22.86 x 10.16 x 10.16 cm; 317.51 g
Item model number	98040056453
Item Height	4 Inches
Item Width	4 Inches
Are batteries included?	No

3M Fire Barrier Rated Foam FIP 1-Step, Maroon, 12.85 fl oz Cartridge

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